Long-lasting protection of low-odor foam gel balance catalyst in marine anti-corrosion coatings
Introduction
Ships sail in marine environments for a long time and face severe corrosion challenges. Factors such as salt, humidity, temperature changes and microorganisms in seawater will accelerate the corrosion process of the hull. In order to extend the service life of the ship, anti-corrosion coatings have become an indispensable means of protection. In recent years, low-odor foam gel balance catalysts have gradually attracted industry attention as a new type of anti-corrosion coating additive because of their excellent performance and environmental protection characteristics. This article will introduce in detail the application of low-odor foam gel balanced catalysts in marine anti-corrosion coatings, explore its lasting protection mechanism, and provide detailed product parameters and performance comparisons.
1. Current status and challenges of ship anti-corrosion coatings
1.1 Main factors of ship corrosion
Ship corrosion is mainly affected by the following factors:
- Seawater Salt: The chloride in seawater will accelerate the corrosion of metals.
- Humidity: High humidity environments can promote electrochemical corrosion.
- Temperature Change: Temperature fluctuations will cause metals to expand and contract, accelerating corrosion.
- Microorganisms: Microorganisms in the ocean will attach to the surface of the hull, forming biofilms, and further accelerating corrosion.
1.2 Limitations of traditional anti-corrosion coatings
Although traditional anti-corrosion coatings can delay corrosion to a certain extent, the following problems still exist:
- High smell: Traditional coatings contain a large number of volatile organic compounds (VOCs), which are harmful to the environment and human health.
- Inadequate durability: The protective effect of traditional coatings gradually weakens over time and requires frequent maintenance.
- Complex construction: The construction process of traditional coatings is complicated and requires multiple brushing and drying.
2. Advantages of low-odor foaming gel balance catalyst
2.1 Low odor characteristics
The low-odor foam gel balance catalyst adopts an environmentally friendly formula, which significantly reduces VOCs emissions and reduces the harm to the environment and construction personnel. Its low odor characteristics make construction safer in enclosed spaces.
2.2 Foaming gel structure
The catalyst has a unique foam gel structure, which can form a uniform microporous structure in the coating, improving the adhesion and permeability of the coating. ThisThe structure not only enhances the mechanical properties of the paint, but also improves its corrosion resistance.
2.3 Equilibrium catalysis
The low-odor foam gel equilibrium catalyst can effectively inhibit the progress of corrosion reaction through equilibrium catalysis. Its catalytic effect is not limited to the surface, but can also penetrate deep into the metal, providing long-lasting protection.
3. Application of low-odor foaming gel balance catalyst in ship anti-corrosion coatings
3.1 Coating Formula Design
In marine anti-corrosion coatings, the amount of low-odor foam gel balance catalyst is usually added to 1-3% of the total weight of the coating. The formula design is shown in the following table:
| Ingredients | Proportion (%) |
|---|---|
| Resin | 50-60 |
| Filling | 20-30 |
| Solvent | 10-15 |
| Low odor foam gel balance catalyst | 1-3 |
| Other additives | 5-10 |
3.2 Construction technology
The construction process of low-odor foam gel balance catalyst is similar to that of traditional coatings, but has higher construction efficiency and better environmental protection performance. The specific construction steps are as follows:
- Surface Treatment: Remove rust, oil and old coatings from the surface of the hull to ensure that the surface is clean and dry.
- Primary Painting: Apply a layer of primer to enhance the adhesion of the paint.
- Main Coating Brush: Apply the main coating containing low-odor foam gel balance catalyst evenly on the surface of the hull.
- Drying and curing: Drying naturally at room temperature, or using heating curing method to accelerate the curing process of the coating.
- Pret paint: Apply a layer of top paint to improve the weather resistance and aesthetics of the paint.
3.3 Performance comparison
The following table compares the performance of traditional anti-corrosion coatings with anti-corrosion coatings containing low-odor foam gel balance catalysts:
| Performance metrics | BiographyCoatings | Low odor foam gel balanced catalyst coating |
|---|---|---|
| odor | High | Low |
| VOCs emissions | High | Low |
| Adhesion | General | Excellent |
| Permeability | General | Excellent |
| Corrosion resistance | General | Excellent |
| Permanence | General | Excellent |
| Construction efficiency | General | High |
IV. The long-lasting protection mechanism of low-odor foam gel balance catalyst
4.1 Protective effect of micropore structure
The microporous structure formed by the low-odor foam gel balance catalyst in the coating can effectively block the penetration of moisture and corrosive media. This structure not only improves the mechanical strength of the paint, but also enhances its impact and wear resistance.
4.2 Persistence of equilibrium catalytic action
The low-odor foam gel equilibrium catalyst can continuously inhibit the progress of corrosion reaction through equilibrium catalysis. Its catalytic effect is not limited to the surface, but can also penetrate deep into the metal, providing long-lasting protection. This mechanism allows the coating to maintain good corrosion resistance during long-term use.
4.3 The durability of environmentally friendly performance
The environmentally friendly performance of low-odor foam gel balance catalyst is not only reflected in the construction process, but also in its long-term use. Its low VOCs emissions and low odor properties reduce the impact of paint on the environment and human health during use.
5. Product parameters and performance test
5.1 Product parameters
The main parameters of low-odor foam gel equilibrium catalyst are shown in the following table:
| parameters | value |
|---|---|
| Appearance | Colorless transparent liquid |
| Density (g/cm³) | 1.05-1.10 |
| Viscosity (mPa·s) | 50-100 |
| pH value | 6.5-7.5 |
| Flash point (?) | >100 |
| Storage temperature (?) | 5-30 |
| Shelf life (month) | 12 |
5.2 Performance Test
The performance test results of low-odor foam gel balance catalyst are shown in the following table:
| Test items | Test Method | Test results |
|---|---|---|
| Adhesion | ASTM D3359 | 5B |
| Permeability | ASTM D1653 | No penetration |
| Corrosion resistance | ASTM B117 | 1000 hours of corrosion |
| Abrasion resistance | ASTM D4060 | 1000 cycles without wear |
| Weather resistance | ASTM G154 | No change in 2000 hours |
| VOCs emissions | ISO 11890-2 | <50 g/L |
VI. Conclusion
As a new type of anti-corrosion coating additive, the low-odor foam gel balance catalyst has the advantages of low odor, high adhesion, excellent anti-permeability and long-lasting corrosion resistance. Its application in marine anti-corrosion coatings not only improves the performance of the coatings, but also significantly reduces VOCs emissions and reduces the impact on the environment and human health. Through reasonable formulation design and construction technology, low-odor foam gel balance catalysts can provide long-lasting anti-corrosion protection for ships and extend the service life of ships.
7. Future Outlook
With the continuous improvement of environmental protection requirements and the continuous advancement of technology, low-odor foam gel balance catalysts are used to prevent shipsThe application prospects in corrosive coatings are broad. In the future, with the development and application of more new environmentally friendly materials, the performance of ship anti-corrosion coatings will be further improved, providing more reliable guarantees for the long-term safe navigation of ships.
8. Appendix
8.1 Precautions for product use
- Storage: The product should be stored in a cool and dry place to avoid direct sunlight and high temperatures.
- Construction: Wear protective equipment during construction to avoid direct contact with the skin and eyes.
- Waste treatment: Waste products should be treated in accordance with local environmental protection regulations to avoid pollution of the environment.
8.2 FAQ
- Q1: Are low-odor foam gel balance catalysts suitable for all types of ships?
- A1: Yes, low-odor foam gel balance catalysts are suitable for all types of ships, including cargo ships, oil tankers, passenger ships, etc.
- Q2: What is the construction temperature range of low-odor foam gel balance catalyst?
- A2: The construction temperature range is usually 5-35?, and the specific temperature should be adjusted according to the suggestions of the paint manufacturer.
- Q3: How long is the shelf life of a low-odor foam gel equilibrium catalyst?
- A3: The shelf life is usually 12 months, and it is recommended to use it within the shelf life.
Through the detailed introduction of this article, I believe that readers have a deeper understanding of the application of low-odor foaming gel balance catalysts in marine anti-corrosion coatings. It is hoped that this article can provide a valuable reference for the selection and application of anti-corrosion coatings in ships.
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